1617605901481 has 8 divisors (see below), whose sum is σ = 1640627352000. Its totient is φ = 1594591069680.

The previous prime is 1617605901473. The next prime is 1617605901493. The reversal of 1617605901481 is 1841095067161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1617605901481 - 2³ = 1617605901473 is a prime.

It is a super-2 number, since 2×1617605901481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1617605907481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161366 + ... + 2141023.

It is an arithmetic number, because the mean of its divisors is an integer number (205078419000).

Almost surely, 2^{1617605901481} is an apocalyptic number.

It is an amenable number.

1617605901481 is a deficient number, since it is larger than the sum of its proper divisors (23021450519).

1617605901481 is an equidigital number, since it uses as much as digits as its factorization.

1617605901481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309359.

The product of its (nonzero) digits is 362880, while the sum is 49.

The spelling of 1617605901481 in words is "one trillion, six hundred seventeen billion, six hundred five million, nine hundred one thousand, four hundred eighty-one".